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A brake assembly has been tested and found to have a capacity that is normally distributed with a a mean of 275 lb and a stadard deviation of 25lb. If a normally distributed force having a mean of 180lb and standard deviation of 30 lb is applied, what is the static reliability? As the variability ( variance) of either the strength or load increases, what happens to the the reliability?
Assuming that they wish to test the claim at alpha = 0.025, determine the rejection and non rejection regions based on your hypotheses in a). State the critical value.
The International Coffee Association has reported the mean daily coffee consumption for U.S. residents as 1.65 cups. Assume that a sample of 38 people from a North Carolina city consumed a mean of 1.84 cups of coffee per day
A sample of 10 electronic tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. estimate the mean and the standard deviation of the population of all such tubes produced by the company?
Given below are heart volume measurements taken on male athletes. Do heart volumes differ for male athletes who participate in different sports?
the rank correlation coefficient is used when one isa not interested in drawing inferences from the the studyb
Using an investment game, the study demonstrated that people who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable a..
if we have a 95 confidence interval we have alpha2 below the confidence interval and alpha2 above the confidence
based on this data give your answers to parts a-c as fractions or decimals to at least 3 decimal places. give your to
according to most estimates 10 of the people in the general population are left-handed and 90 are right-handed. a
Pedestrians can press at traffic intersections. It was found that 77% of those buttons do not work. Is the figure of 77% a parameter or a statistic?
a sample of 12 radon detectors of a certain type was selected and each was exposed to 100 pcil of radon. the resulting
In recent years, fishermen have suffered financial hardship because of shortened fishing seasons, reduced catches and lower market prices. Moreover, fishermen have complained about price fluctuations and have called for a system of minimum prices.
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